Feeding device for bolting or other machines.



' No; 734,631. PATENTED JULY 28, 1903;

' R. A. STUBBS.

FEEDING DEVICE FOR BOLTING OR OTHER MACHINES.

APPLICATION FILED MAY 23, 1902.

no MODEL.

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PatentedJuIy 28, 1909;.

Fries.

PATENT ltILEY Ascent sronns, on DAYTON, OHIO.

FEEDING D EVICEFOR BOLTING OR OTHEll MACHINES.

SPECIFICATION forming part of Letters Patent N 0. 784,631, dated July28, 1903 Serial No. 108,659. (No model.)

If aZZ whom it may concern:

Be it known that I, RILEY ASBURY STUBBS,

a citizen of the United States, residing at Day-. ton, in the county ofHamilton andState of. Ohio, have invented new and useful Improve-i mentsin FeedingDevices for Bolting or other Machines, of which the followingis a specification.

My invention relates to feed apparatus for flour-bolting machines,crushing-rollers, and

other machines where it is required to feed grain and like material anddistribute the same uniformly. It is peculiarly well adapted to theclass of bolting-machines employing a fixed bolting-cloth thrown intosuccessive corrugations or waves, by which the crushed stock is carriedforward and bolted.

In bolting-machines, and especially in the class indicated, it conducesto :the efficiency of the sifting action that the flour stock receivedfrom the reduction-rolls should be fed and distributed to thebolting-cloth uniformly and gradually over the surface from side toside, as it is desirable to avoid any forced passage of particlesthrough the meshes of the cloth, even though the same should be producedby the mere weight of'any concentration of superincumbent material atany' one point. To properly regulate and uniformly feed and distributethe crushed stock, I have devised the mechanism herein described, whichacts to feed and distribute the stock equally over the cloth from sideto side, and thus insures the best results in the bolting operation.

To this end my invention consists in the I combination, with afeed-hopper, of an oscillating bar or equivalent support operating i ijust below the feed-hopper, provided with a 40 series of fingers oragitators projectedupward and playing through the feed-opening into ythe mass of stock and acting to prevent clogdurable in continuedservice.

the front wall being removed, showingthe feed-regulating bar andattachments; Figs. 2 and 3, partial front views showing the relations ofthe series of fingers t0 the hopper at opposite extremities of itsoscillation; Fig. t, a cross-section of same, showing the relation ofthe feed devices to the hopper and to the bolting-cloth beneath.

Referring now to the drawings, A designates the feed-hopper of thebolting-machine, which receives the crushed stock as it comes from thereduction-rolls (not shown) and delivers the same to the bolting-cloththrough a laterally-extended orifice a, at the bottom.

In the class of bolting-machines hereinbefore indicated, having ahorizontally-arranged bolting-cloth, the relation of the feeding-hopperand devices is as shown by Fig. 4, the bolting-cloth beingindicated bythe dotted wave-line w of said figure. In this class of bolting-machinesthe wave motion of the cloth gradually carries forward the larger[particles of the stock by a gentle rolling movement, While theintermovement of the mesh fibers produces a sifting action, whichcarries through the smaller particles. It will be readily seen that tosecure the best results of this action of the bolting-cloth it isdesirable to feed the material uniformly across the bolting-web,and thisis accomplished by the bar B, hung upon pivoted links I) b beneath thehopper A in the line of the discharge-orifice ct, said bar having at itsupper side a series of curved fingers or hooks c, projecting upwardthrough the orifice a into the body of the hopper. I find the U-shapedfingers,such as illustrated herein, to be effective and most The bar Bswings upon its pivotal hangers with an oscillatory motion in the planeof the central axis of the discharge-orifice a and is actuated to andfro by a rod or pitman p, attached to the bar, and engages a crank oreccentric p, journaled at any convenient pointon the frame. Theoscillatory motion of the hooks thus producedis thus both vertical andlateral and tends to prevent packing of the material, moves it sidewise,and draws it downward into and through the dischargeopening (1, therebyaiding the passage of the uniformly. In case any foreign matter, suchstock downward and distributing the same I in operation and moredurable.

fully regulate the degree of rapidity of the as a bit of corncob, entersthe hopper and is too large to pass through the feed-slit the fingersprevent its wedging, and it is continually pushed upward, and the finermaterial is allowed to pass by and feed through. Likewise anyobstruction small enough to pass down beneath the hook part of thefingers is drawn down and forced through the feed-slit.

It may aid in certain cases to stagger the fingers or hooks calternately to a slight degree, so that the action may not be confinedstrictly to the same plane, or they may be bent sidewise all in onedirection. A T- shaped finger or even a straight finger or other formsmight be used with good results, but wires bent to the form shown areefficient To more feed, I hinge one of the side walls a of thedischarge-mouth of the hopper and place behind it one or more springs S,carried upon a thumb screw 8, whose shank is threaded through a fixedportion (1, a nut n bearing against the spring, so that the hinge-wallmay rest against the spring, whose resistance tension may be regulated,or the shank may be set forward to bear rigidly against the hinged walla, thus giving means suited to difierent conditions or material ofvarying the size of the feed-opening and the yielding adjustment of thehinged portion or gate of the hopper. Having described my invention, Iclaim and desire to secure by Letters Patent of the United States- 1. Incombination with a feedhopper, a

feeding and distributing device including vertical fingers disposed inthe discharge slit or orifice ot' the hopper, and means whereby saidfingers are moved in Vertical planes and simultaneously in the directionof the length of said slit or orifice.

2. In combination with a feed-hopper of the character indicated a barhung beneath and across the path of the discharge and capable of anendwise oscillation, and having a series of fingers projecting upwardand through the discharge-orifice of the hopper, and means foroscillating said bar substantially as set forth.

3. The combination of the hopper provided with a hinged wall or gate;vertical fingers disposed in the discharge slit or orifice between thegate and the adjacent wall of the hopper; and means for imparting to thefingers a combined up-and-down and sidewise movement.

4. The combination withafeed-hopperhaving a hinged wall or gate, and anadjusting screw and spring, of a bar hung beneath and across the path ofthe discharge, Vertical fingers on the bar extending into saiddischargeorifice, and means for operating the bar to impart thereto anup-and-down and endwise oscillation.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

RILEY ASBURY STIIBBS.

Witnesses:

H. 0. BLACK, J OHN L. H. FRANK.

